Title: Optimisation of shot peening process for AISI 4140H forged connecting rod using MADM techniques
Authors: A.A. Dounde; Chandrakant Y. Seemikeri; S.G. Kamthe
Addresses: Department of Mechanical Engineering, Government College of Engineering, Karad, India ' Department of Mechanical Engineering, Government Polytechnic, Nashik, India ' Inspection and Quality Control, Bharat Forge Limited, Pune, India
Abstract: Shot peening is a process that set up compressive residual stresses on the surface of component and alters its mechanical properties, which depends on proper selection of peening parameters. Manufacturer is always in demand to improve productivity and reduce cost. The attempt of this paper is to optimise shot peening process parameters by various multiple attribute decision making (MADM) techniques such as TOPSIS, GRA, SAW and desirability approach. In the present investigation shot mix, exposure time and shot flow rate are considered as input process parameters whereas surface roughness and compressive residual stresses are considered as response variables. MADM techniques suggest that, shot flow rate of 21 amp and exposure time of 120 sec are optimum setting of peening parameters. The analysis will be useful for process planning to decide the peening parameters for best combination of performance characteristics.
Keywords: compressive residual stress; CRS; design of experiment; DOE; multiple attribute decision making; MADM; shot peening.
International Journal of Manufacturing Technology and Management, 2018 Vol.32 No.4/5, pp.316 - 335
Received: 16 Aug 2016
Accepted: 08 Jan 2017
Published online: 25 Jul 2018 *